Add Build script (#399)

package.json

@@ -688,6 +688,7 @@
 	},
 	"scripts": {
 		"vscode:prepublish": "tsc -p ./",
+		"build": "tsc -p ./",
 		"compile": "tsc -watch -p ./",
 		"postinstall": "node ./node_modules/vscode/bin/install",
 		"test": "node ./node_modules/vscode/bin/test",